(a) In any involuntary proceeding in a State court where the court knows or has reason to know that an Indian child is involved, and where the identity and location of the child's parent or Indian custodian or Tribe is known, the party seeking the foster-care placement of, or termination of parental rights to, an Indian child must directly notify the parents, the Indian custodians, and the child's Tribe by registered or certified mail with return receipt requested, of the pending child-custody proceedings and their right of intervention. Notice must include the requisite information identified in § 23.111 , consistent with the confidentiality requirement in § 23.111(d)(6)(ix) . Copies of these notices must be sent to the appropriate Regional Director listed in paragraphs (b)(1) through (12) of this section by registered or certified mail with return receipt requested or by personal delivery and must include the information required by § 23.111 .(b)(1) For child-custody proceedings in Alabama, Connecticut, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia, or any territory or possession of the United States, notices must be sent to the following address: Eastern Regional Director, Bureau of Indian Affairs, 545 Marriott Drive, Suite 700, Nashville, Tennessee 37214.(2) For child-custody proceedings in Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, or Wisconsin, notices must be sent to the following address: Minneapolis Regional Director, Bureau of Indian Affairs, 5600 American Blvd. W, Ste. 500, Bloomington, MN 55437.(3) For child-custody proceedings in Nebraska, North Dakota, or South Dakota, notices must be sent to the following address: Aberdeen Regional Director, Bureau of Indian Affairs, 115 Fourth Avenue SE., Aberdeen, South Dakota 57401.(4) For child-custody proceedings in Kansas, Texas (except for notices to the Ysleta del Sur Pueblo of El Paso County, Texas), or the western Oklahoma counties of Alfalfa, Beaver, Beckman, Blaine, Caddo, Canadian, Cimarron, Cleveland, Comanche, Cotton, Custer, Dewey, Ellis, Garfield, Grant, Greer, Harmon, Harper, Jackson, Kay, Kingfisher, Kiowa, Lincoln, Logan, Major, Noble, Oklahoma, Pawnee, Payne, Pottawatomie, Roger Mills, Texas, Tillman, Washita, Woods or Woodward, notices must be sent to the following address: Anadarko Regional Director, Bureau of Indian Affairs, P.O. Box 368, Anadarko, Oklahoma 73005. Notices to the Ysleta del Sur Pueblo must be sent to the Albuquerque Regional Director at the address listed in paragraph (b)(6) of this section.(5) For child-custody proceedings in Wyoming or Montana (except for notices to the Confederated Salish and Kootenai Tribes of the Flathead Reservation, Montana), notices must be sent to the following address: Billings Regional Director, Bureau of Indian Affairs, 316 N. 26th Street, Billings, Montana 59101. Notices to the Confederated Salish and Kootenai Tribes of the Flathead Reservation, Montana, must be sent to the Portland Regional Director at the address listed in paragraph (b)(11) of this section.(6) For child-custody proceedings in the Texas counties of El Paso and Hudspeth or in Colorado or New Mexico (exclusive of notices to the Navajo Nation from the New Mexico counties listed in paragraph (b)(9) of this section), notices must be sent to the following address: Albuquerque Regional Director, Bureau of Indian Affairs, 615 First Street, P.O. Box 26567, Albuquerque, New Mexico 87125. Notices to the Navajo Nation must be sent to the Navajo Regional Director at the address listed in paragraph (b)(9) of this section.(7) For child-custody proceedings in Alaska (except for notices to the Metlakatla Indian Community, Annette Island Reserve, Alaska), notices must be sent to the following address: Alaska Regional Director-Attn: Human Services, Bureau of Indian Affairs, 3601 C Street, Suite 1258, Anchorage, Alaska 99503. Notices to the Metlakatla Indian Community, Annette Island Reserve, Alaska, must be sent to the Portland Regional Director at the address listed in paragraph (b)(11) of this section.(8) For child-custody proceedings in Arkansas, Missouri, or the eastern Oklahoma counties of Adair, Atoka, Bryan, Carter, Cherokee, Craig, Creek, Choctaw, Coal, Delaware, Garvin, Grady, Haskell, Hughes, Jefferson, Johnson, Latimer, LeFlore, Love, Mayes, McCurtain, McClain, McIntosh, Murray, Muskogee, Nowata, Okfuskee, Okmulgee, Osage, Ottawa, Pittsburg, Pontotoc, Pushmataha, Marshall, Rogers, Seminole, Sequoyah, Stephens, Tulsa, Wagoner, or Washington, notices must be sent to the following address: Muskogee Regional Director, Bureau of Indian Affairs, 101 North Fifth Street, Muskogee, Oklahoma 74401.(9) For child-custody proceedings in the Arizona counties of Apache, Coconino (except for notices to the Hopi Tribe of Arizona and the San Juan Southern Paiute Tribe of Arizona) or Navajo (except for notices to the Hopi Tribe of Arizona); the New Mexico counties of McKinley (except for notices to the Zuni Tribe of the Zuni Reservation), San Juan, or Socorro; or the Utah county of San Juan, notices must be sent to the following address: Navajo Regional Director, Bureau of Indian Affairs, P.O. Box 1060, Gallup, New Mexico 87301. Notices to the Hopi and San Juan Southern Paiute Tribes of Arizona must be sent to the Phoenix Regional Director at the address listed in paragraph (b)(10) of this section. Notices to the Zuni Tribe of the Zuni Reservation must be sent to the Albuquerque Regional Director at the address listed in paragraph (b)(6 of this section).(10) For child-custody proceedings in Arizona (exclusive of notices to the Navajo Nation from those counties listed in paragraph (b)(9) of this section), Nevada, or Utah (exclusive of San Juan County), notices must be sent to the following address: Phoenix Regional Director, Bureau of Indian Affairs, 1 North First Street, P.O. Box 10, Phoenix, Arizona 85001.(11) For child-custody proceedings in Idaho, Oregon, or Washington, notices must be sent to the following address: Portland Regional Director, Bureau of Indian Affairs, 911 NE 11th Avenue, Portland, Oregon 97232. All notices to the Confederated Salish and Kootenai Tribes of the Flathead Reservation, located in the Montana counties of Flathead, Lake, Missoula, and Sanders, must also be sent to the Portland Regional Director.(12) For child-custody proceedings in California or Hawaii, notices must be sent to the following address: Sacramento Regional Director, Bureau of Indian Affairs, Federal Office Building, 2800 Cottage Way, Sacramento, California 95825.(c) Upon receipt of the notice, the Secretary will make reasonable documented efforts to locate and notify the child's Tribe and the child's parent or Indian custodian. The Secretary will have 15 days, after receipt of the notice, to notify the child's Tribe and parents or Indian custodians and to send a copy of the notice to the court. If within the 15-day period the Secretary is unable to verify that the child meets the criteria of an Indian child as defined in § 23.2 , or is unable to locate the parents or Indian custodians, the Secretary will so inform the court and state how much more time, if any, will be needed to complete the verification or the search. The Secretary will complete all research efforts, even if those efforts cannot be completed before the child-custody proceeding begins.(d) Upon request from a party to an Indian child-custody proceeding, the Secretary will make a reasonable attempt to identify and locate the child's Tribe, parents, or Indian custodians to assist the party seeking the information.81 FR 38866, June 14, 2016, as amended at 83 FR 55268, Nov. 5, 2018 81 FR 38866, 12/12/2016; as amended at 83 FR 55268, 11/5/2018